Window-screen device



Dec; 3, 1929'. R. WOLZENSKI 1,738,131

W INDOW SCREEN DEVICE Filed Jan. 25. 1928 2 Sheets-Sheet 1 Dec. 3, 1929. R. WOLZENSKI WINDOW SCREEN DEVICE Filed Jan. 25, 1928 2 Sheets-Sheet 2 FIG. 6

Patented Dec. 3, 1929 UNITED STATES PATENT OFFICE ROMAN WOLZENSKI, OF WARRENTON, MISSOURI WINDOW-SCREEN DEVICE Application filed January 25, 1928. Serial No. 249,482.

screen thereof will be rolled and unrolled in response to vertical movement of the window sash without the aid of the springs which are usually associated with screen rolls of the type employed as parts of devices of this An important feature of my invention resides in the fact that the screen thereof may be conveniently rendered operative or inoperative by the manipulation of simple locking means, so that the screen will move in response to movement of the window sash or remain stationary during such movement of the sash, as desired.

Fig. 1 is an elevation of a window constructed in accordance with this invention as same will appear when viewed from within the room of which the window forms a part.

Fig. 2 is a vertical section through the window illustrated in Fig. 1.

Fig. 3 is a horizontal section of the window shown in Figs. 1 and 2 and taken just above the sill thereof.

Fig. 4: is a view of the window on a reduced scale showing the same as it will appear when the lower sash is raised and the screeniis arranged in the opening beneath said lower sash.

Fig. 5 is a view similar to Fig. 4 but with the screen in its inoperative position.

Fig. 6 is a fragmentary perspective assembly showing the screen together with certain elements associated therewith.

Fig. 7 is a fragmentary perspective showing the mechanism for imparting rotary motion to the screen roll when the window sash is raised or lowered.

Fig. 8 is an enlarged fragmentary hori; Zontal section showing one of the locking devices for rendering the screen operative or inoperative.

Fig. 9 is a front elevation of the parts shown in Fig. 8.

Fig. 10 is a side elevation of the parts shown in Fig. 9.

In the drawings, A designates a window which includes the usual frame, sill. and upper and lower, vertically movable sashes. Located at the bottom of the lower sash of the window A is a bar 19 which extends longitudinally of the lower edge of said lower sash,

said bar 19 being provided with a recess 19 arranged longitudinally of its upper edge in which the lower edge portion of the lower sash is seated. The portions of the bar 19 which constitute the side walls of the recess 19 are provided with apertures through which suitable fastening devices may be extended whereby the bar 19 may be securely fixed to the lower sash of the window. At the opposite ends of the bar 19 I arrange vertically disposed elements, each of which comprises a pair of upstanding bars 18 which are joined at their lower end portions by a por tion 18, and the portions 18 of the oppositely disposed elements are arranged in contact with the opposite ends of the bar 19. The ele ments at the opposite ends of the bar 19 are secured to the lower window sash by suitable fastening devices, which are extended through apertures formed through the bars 18 thereof, and each of said bars 18 is provided with a shoulder 18 which contacts with a shoulder 19 formed on the bar 19 at an end thereof.

The bar 19 is provided with an opening 19 formed longitudinally therethrough from end to end thereof, and positioned in said opening is a shaft 11, said shaft being extended longitudinally of said opening and at points adjacent to its opposite ends being supported for rotary motion in openings formed through the portions 18 of the elements 18 at the opposite ends of the bar 19. The shaft 11 serves as a roll for the screen 10, said screen being arranged on the shaft 11 so that it may be wound on and unwound from said shaft when same is rotated. The screen may be secured to the shaft in any suitable manner, such, for instance, as by means of a split tube 12. The shaft 11 at its opposite ends is provided with non-circular portions on which pinions 14 are positioned, the particular pinions shown in the drawings comprising each a circular element pins 13 extend.

The bar 19 is provided with an elongated aperture 19 which extends at an angle from the opening 19 to the outer surface of said bar. The aperture 19 extends from end to end of the bar 19 and thescreen 10 is passed through said aperture, as shown in Fig. 6. At the outer end of the screen 10 I provide an elongated member 6 which is approximately U-shaped in cross-section, the screen being extended between the spaced apart legs of said member and fastening devices 6-- being extended through said legs of said member and through the screen for the purpose of securing said member to. saidscreen.

Formed through the legs of the member 6 and through the screen 1O is a pair of apertures 5 which are intended for 'a purpose to,

. hereinafter set forth.

' Secured in any suitable manner to theele- "ments 'B '(Fig. 8) which constitute stationary parts of the window frame at opposite sides of said window (Fig. 3) is apair of guiding members 16, one of'which is associated with eachindividual element B. Each of the guiding members 16 is provided with a'slot 16 extended longitudinally from end to end thereof,' and said slot is approximately T-shaped in cross-section, as shown clearly in Fig. 8, At the lower end of each of the guidin members 16 I Prov de an aperture '16, said aperture being formed through the front or otherwise solid wall or the guiding member, as shown in Fig.7.

Associated with the guiding members 16 isa pair of racks 15, each of said racks havthe" rear 'facel thereof, and said rib, which eX- tendsi from end to end ofth'ev rack, at'spaced intervals having transversely arranged ribv forming elements 15 secured thereto or formed thereon. The elements 15" provide each of'the racks 15 with rib portions of 1 approximately the same cross-sectionalls hape as the T-shaped opening formed through the guiding members 16,-henceit is apparent that because the rib portions of the racks are disposed within the T-shaped openings of the associated guiding members, as shown clearly Fig. 7,"said racks may slide longitudinally of the guiding members 16 while being guided in straight line m-ovement thereby. The rib 15. of each of the racks'1 5 is'cut away .to

provide a recess as indicated at 17 in-Fig. 7,

7 there being portions of the rib located above .racks 15 mesh with the projections? 13 ,0f the, pinions 14; at the opposite ends of the and below said recess, and said recess being so positioned with respect to the lower end of the rack 15 that same will register with the aperture 16 jfornied through .a wall .of the associated guidingmember. The teeth of the shaft 11, as shown in Fig. 7

Mounted on the sill of the 7 window A at the opposite sides thereof is a pair of locking devices which comprises each a housing in which an eccentric rotor 8 is mounted for rotary movement. Each rotor 8 is mounted on a rotatably supported stud shaft 7 (Fig. 8) and fixed to this stud shaft in such a manner as to be rotatable therewith is an operating handle, 1, said handle being extended through a slot in the wall of the housing, so that the outer end portion of said handle is accessible at the outside of the housing. Associated with the eccentric rotor of each locking device is a pair of arms 9, said for.

' The housing of each locking device is made in two parts, one of which is located above the, window sill and the other below said window sill, and the lower part 3 of said housing is provided at its oppositc sides with guideways 3 in which 'plungcrs 4; are arranged. The plungcrs 4 are urged forwardly by springs (not shown and the outer ends of the arms 9 extend into recesses 4 formed in said arms, said arms being capable of contacting with the shoulders at the opposite ends of said recesses. The springs associated with the plungers 4 serve to maintain the arms 9 in contact with the pins 9', this being due to the fact that said springs urge the plungers forwardly, and shoulders on' said plungers contact with said arms and maintain them in their forward positions in contact with the, pins 9. The plungers l of the ing an elongated rib 15. formed thereon at ends of the arms 9 will be moved forwardly itolcausethe arms to pivotabout the pins 9', whereby the outer ends of the arms will be moved rearwardly to retract the plungers 4; and when the rotors are rotated in the opposite direction the springs associated with the plungers will force. said plungers forwardly.

In the use of my improved window, if it is desired to raise the lower sash without drawing the screen across the opening be- :neath the raised lower sash the handles 'l of the locking'devices will be located in such positions that the plungerse will be retracted and withdrawn from the apertures 5 and l6. The lower sash may. then be raised andlowered and the screen will move with saidlower sash in a rolled condition, andsaid screen will be completely concealed within the retit cess in the bar 19 at the lower edge of the sash in which the shaft is positioned. When this movement of the lower sash takes place, the racks 15 will move upwardly or downwardly in the guideways 16 with the lower sash, the connection between the lower sash and the racks being the result of the meshing of the teeth of said racks with the elements 13 of the pinions 14:.

However, when it is desired to raise or lower the lower sash of the window so as to cause the screen to cover the opening below said lower sash, as shown in Fig. 4, the operating handles 1 of the locking devices will be operated to rotate the eccentric rotors 8, and thus impart movement to the arms 9, which will cause the plungers i to be introduced into the apertures 5 inv the member 6 attached to the screen and the apertures 16 in the guide ways 16. With the plungers so positioned, the member 6 will be attached to the sill of the window, and the plungers l, which enter the apertures 16, will extend into the recesses 17 in the ribs of the racks, whereby vertical movement of said racks is prevented. Upward movement of the lower sash of the window when the locking devices have been operated as described will result in the screen being unrolled from the shaft 11, due to the fact that the lower end of the screen is attached to the window sill, and because the stationary racks 15 will cause the pinions 14L and shaft 11 to be rotated as said pinions move upwardly with the lower sash with respect to said racks. vVhen the lower sash is in an elevated position and same is moved downwardly with the locking devices positioned as described, the pinions l l will be rotated in the reverse direction because of their meshing engagement with the stationary racks 15, whereby the screen will be rewound on the shaft 11 during such downward movement of said lower sash.

I'claim:

1. In a device of the class described, inclu ding a window frame, a window sash supported for vertical movement in said window frame, a rotatable element supported by said sash, a screen arranged to be wound on said rotatable element, and a pinion mounted on said rotatable element; guiding means arranged parallel with the direction of movement of said window sash, a rack movably supported by said guiding means, and means for detachably fixing said rack to said guiding means, said pinion being in mesh with said rack and said rack being capable of mov ing with said window sash and with respect to said guiding means when fixed connection with said guiding means is released.

2. In a device of the class described, including a window frame, a window sash supported for vertical movement in said window frame, a rotatable element supported by said sash, a screen arranged to be wound on said rotatable element, and a pinion mounted on said rotatable element; guiding means arranged parallel with the direction of movement of said window sash, a rack movably supported by said guiding means, means for detachably fixing said rack to said guiding means, said pinion being in mesh with said rack and said rack being capable of moving with said window sash and with respect to said guiding means when fixed connection with said uiding means is released, and means for locking said screen to a portion of said window frame.

3. In a device of the class described including a window frame, a window sash supported for vertical movement in said window frame, a rotatable element supported by said sash, a screen arranged to be wound on said rotatable element, and a pinion mounted on said rotatable element; guiding means arranged parallel with the direction of movementof said window sash, a rack movably supported by said guiding means, means for detachably fixing said rack to said guiding means, said pinion being in mesh with said rack and said rack being capable of moving with said window sash and with respect to said guiding means, when fixed connection with said guiding means is released, and operating means for simultaneously locking said screen to a portion of the window frame and said rack to said guiding means.

4. In a device of the class described including a window frame, a window sash supported for vertical movement in said win dow frame, a rotatable element supported by said sash, a screen arranged to be wound on said rotatable element, and a pinion mounted on said rotatable element; guiding means arranged parallel with the direction of movement of said window sash, a rack movably supported by said guiding means, means for detachably fixing said rack to said guiding means, said pinion being in mesh with said rack and said rack being capable of moving with said window sash and with respect to said guiding means when fixed connection with said guiding means is released, and operating means for simultaneously locking said screen to a portion of the window frame and said rack to said guiding means, said locking means including plungers, an eccentric rotor, and pivotally movable arms connected to said plungers and arranged in contact with said eccentric rotor whereby movement of said eccentric rotor will impart movement to said plungers.

ROMAN WVOLZENSKI. 

